<template>
  <el-container class="home-container">
    <!-- 头部区 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button @click="logout" type="info">退出</el-button>
    </el-header>

    <!-- 主体区域 -->
    <el-container>
      <!-- 侧边导航 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <!-- 侧边导航栏 -->
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu
          background-color="#545c64"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active= "activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menuist"
            :key="item.id"
          >
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{ item.authName }}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/' + obj.path"
              v-for="obj in item.children"
              :key="obj.id"
              @click="saveNavState('/' + obj.path)"
            >
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{ obj.authName }}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 主体内容 -->
      <el-main>
        <!-- 路由挂载 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      //左侧菜单数据
      menuist: [],
      //字体图标数据
      iconsObj: {
        125: "iconfont icon-user",
        103: "iconfont icon-tijikongjian",
        101: "iconfont icon-shangpin",
        102: "iconfont icon-danju",
        145: "iconfont icon-baobiao",
      },
      //控制是否折叠菜单
      isCollapse: false,
      //保存激活路径
      activePath : ''
    };
  },
  created() {
    this.gitMenuList();
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    //退出按钮
    logout() {
      //清除token跳转到登录
      window.sessionStorage.clear();
      this.$router.push({
        path: "/login",
      });
    },
    //发送请求接受数据
    async gitMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.menuist = res.data;

      // console.log(res);
    },
    //折叠菜单栏
    toggleCollapse() {
      this.isCollapse = !this.isCollapse;
    },
    //保存激活路径的地址
    saveNavState(activePath) {
     window.sessionStorage.setItem('activePath' ,activePath )
    }
  },
};
</script>

<style lang="less" scoped>
.el-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 20px;
  padding-left: 0;
  background-color: #373d41;

  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: 0;
  }
}
.el-main {
  background-color: #eaedf1;
}
.home-container {
  height: 100%;
}
.iconfont {
  margin-right: 10px;
}
.toggle-button {
  background-color: #4a5064;
  color: #fff;
  text-align: center;
  font-size: 10px;
  line-height: 24px;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
>
